Home › Words › K › kyawthuitekyawthuitekyawthuite means an extremely rare bismuth antimonate gem, chemical formula Bi³⁺Sb⁵+O₄.Among words judged in Lexicurio's Arena, kyawthuite ranks #36,620 of 42,752 for Qualifying.EtymologyNamed for Burmese mineralogist Kyaw Thu.nounAn extremely rare bismuth antimonate gem, chemical formula Bi³⁺Sb⁵+O₄.Definitions & examples from Wiktionary (CC BY-SA 3.0).